<template>
  <el-menu default-active="1-4-1" class="el-menu-vertical-demo" background-color="#545c64" text-color="#fff" active-text-color="#ffd04b" @open="handleOpen" @close="handleClose" :collapse="isCollapse">
    <h3 class="sideTitle">
      <p>手机之家<br />后台管理系统</p>
    </h3>
    <el-menu-item class="sideBox" @click="clickMenu(item)" v-for="item in noChildren" :index="item.path" :key="item.path">
      <i :class="'el-icon-' + item.icon"></i>
      <span slot="title">{{ item.label }}</span>
    </el-menu-item>
    <el-submenu class="sideBox" v-for="item in hasChildren" :index="item.label" :key="item.label">
      <template slot="title">
        <i :class="'el-icon-' + item.icon"></i>
        <span slot="title">{{ item.label }}</span>
      </template>
      <el-menu-item-group v-for="(subItem, subIndex) in item.children" :key="subItem.path">
        <el-menu-item @click="clickMenu(subItem)" :index="subIndex.toString()">{{ subItem.label }}</el-menu-item>
      </el-menu-item-group>
    </el-submenu>
  </el-menu>
</template>

<script>
export default {
  data() {
    return {
      menu: []
    }
  },
  methods: {
    handleOpen(key, keyPath) {
      console.log(key, keyPath)
    },
    handleClose(key, keyPath) {
      console.log(key, keyPath)
    },
    clickMenu(item) {
      this.$router.push({
        name: item.name
      })
      this.$store.commit('selectMenu', item)
    }
  },
  computed: {
    noChildren() {
      return this.asyncMenu.filter(item => !item.children)
    },
    hasChildren() {
      return this.asyncMenu.filter(item => item.children)
    },
    isCollapse() {
      return this.$store.state.isCollapse
    },
    asyncMenu() {
      return this.$store.state.menu
    }
  }
}
</script>
<style lang="less" scoped>
.el-menu-vertical-demo:not(.el-menu--collapse) {
  width: 200px;
  min-height: 400px;
}
.el-menu {
  height: 100%;
  border: none;
}
.sideTitle {
  height: 60px;
  margin-top: 10px;
  text-align: center;
  font-size: 1.1em;
  line-height: 25px;
  letter-spacing: 11px;
  color: #fff;
}
.sideBox {
  margin-bottom: 15px;
  // border-bottom: 1px solid #333;
  box-shadow: 0px 0px 10px #333;
}
</style>
